Sentinel DTO

PHP DTO (Data Transfer Object) generation from JSON Schemas.

Installation

composer require sentinelphp/dto

Features

• Generate PHP classes from JSON Schema
• Type-safe properties with proper PHP types
• Nested objects and arrays support
• Enum generation from schema enums
• Serialization methods (fromArray/toArray)

Usage

Basic Generation

use SentinelPHP\Dto\Generator;
use SentinelPHP\Dto\Config\GeneratorConfig;

$generator = new Generator();

$schema = [
    'type' => 'object',
    'properties' => [
        'id' => ['type' => 'integer'],
        'name' => ['type' => 'string'],
        'email' => ['type' => 'string', 'format' => 'email'],
        'created_at' => ['type' => 'string', 'format' => 'date-time'],
    ],
    'required' => ['id', 'name'],
];

$metadata = new SchemaMetadata(
    httpMethod: 'GET',
    endpointPath: '/users/{id}',
    schemaType: 'response'
);

$dto = $generator->generate($schema, $metadata);

// Write to file
file_put_contents($dto->filePath, $dto->code);

Generated Output

<?php

declare(strict_types=1);

namespace App\Dto;

final readonly class GetUsersIdResponse
{
    public function __construct(
        public int $id,
        public string $name,
        public ?string $email = null,
        public ?\DateTimeImmutable $createdAt = null,
    ) {
    }

    public static function fromArray(array $data): self
    {
        return new self(
            id: $data['id'],
            name: $data['name'],
            email: $data['email'] ?? null,
            createdAt: isset($data['created_at']) 
                ? new \DateTimeImmutable($data['created_at']) 
                : null,
        );
    }

    public function toArray(): array
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'email' => $this->email,
            'created_at' => $this->createdAt?->format(\DateTimeInterface::RFC3339),
        ];
    }
}

Configuration

use SentinelPHP\Dto\Config\GeneratorConfig;

$config = new GeneratorConfig(
    defaultNamespace: 'App\\Dto',
    generateGetters: false,
    generateSerialization: true,
    generateValidation: true,
    useReadonlyClasses: true,
    useFinalClasses: true,
);

$generator = new Generator(config: $config);

Custom Naming Strategy

use SentinelPHP\Dto\Naming\NamingStrategyInterface;

class CustomNamingStrategy implements NamingStrategyInterface
{
    public function generateClassName(SchemaMetadata $metadata): string
    {
        return 'Custom' . ucfirst($metadata->httpMethod) . 'Dto';
    }
    
    // ... other methods
}

$generator = new Generator(namingStrategy: new CustomNamingStrategy());

Type Mapping

JSON Schema Type	PHP Type
string	string
integer	int
number	float
boolean	bool
array	array or typed array
object	Nested DTO class
null	null

Format Handling

Format	PHP Type
date-time	\DateTimeImmutable
date	\DateTimeImmutable
uuid	string (with validation)
email	string (with validation)
uri	string

License

GPL v3 — see LICENSE for details